Hand saw



FIG. 1 is a top, front, right perspective view of a hand saw, embodying the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the hand saw that form no part of claimed design. 

CLAIM We claim the ornamental design for a hand saw, as shown and described. 